S
M
T
W
T
F
S
26
98°
73°
27
100°
74°
28
92°
68°
29
91°
73°
30
84°
68°
31
81°
64°
1
83°
58°
2
86°
57°
3
88°
63°
4
76°
57°
5
78°
58°
6
80°
54°
7
87°
58°
8
80°
54°
9
86°
70°
10
86°
72°
11
91°
65°
12
87°
69°
13
82°
66°
14
81°
68°
15
83°
68°
16
80°
64°
17
84°
61°
18
83°
64°
19
79°
63°
20
83°
59°
21
83°
62°
22
82°
63°
23
71°
61°
24
81°
62°
25
88°
64°
26
83°
59°
27
82°
54°
28
85°
60°
29
91°
67°
30
90°
71°
31
N/A
1
86°
65°
2
89°
68°
3
93°
72°
4
95°
69°
5
92°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Elgin
Elgin's August 2026 forecast shows daily high temperatures ranging from 86° to 95°, with overnight lows between 65° and 72°. The average high for August is 91° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Elgin. See also: September | October | November.